from rest_framework.views import exception_handler
from django.db import DatabaseError
from rest_framework.response import Response
from rest_framework import status

import logging
logger = logging.getLogger('django')

def custom_exception_hander(exc, context):
    """

    :param exc:      异常类
    :param context:   抛出异常的上下文
    :return:         Response响应对象
    """

    # 调用drf框架原生的异常处理方法
    response = exception_handler(exc, context)

    if response is None:
        view = context['view']

        if isinstance(exc, DatabaseError):
            # 数据分析
            logger.error('[%s]%s' % (view, exc))
            response = Response({'message': '服务器内部错误'}, status=status.HTTP_507_INSUFFICIENT_STORAGE)
    return response
